Exhibit 23.1 [ARTHUR ANDERSEN LETTERHEAD] CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this registration statement on Form S-8 filed by NEXTLINK Communications, Inc. (the "Company") of our report dated March 12, 1998, included in the Company's Annual Report on Form 10-KSB for the fiscal year ended December 31, 1997, and to all references to our Firm included in this registration statement. /s/ Arthur Andersen LLP Seattle, Washington January 25, 1999